package com.javaee.lpr.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
        Object obj = request.getSession().getAttribute("id");
        if(obj == null){ // 未登录
            response.sendRedirect("login.html");//重定向login
            return false;
        }
        return true;
    }
}
